A shame this didn't have a decent ending. I know there's that prequel out there, but that doesn't matter if every question I care to have answered would never be in the past that the prequel would focus on. Sure, it could have actually answered the questions, but it won't be from a view of the current characters. It'll be answered for the sake of Tanaka, who wasn't couldn't be flushed out by the time of his end, and Tetsuo, whom we never see outside 2-4 pages (of which he only talks in a flashback or not at all).
I doubt we'll ever have the questions answered, and the rush of this series frankly doesn't give me hope that anything will end properly.